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3 years ago

Which form of radiation is used to directly INCREASE the temperature of water in a nuclear reactor?

Physics

2 answers:

KengaRu [80]3 years ago

7 0

The correct answer to the question is : Gamma radiation.

EXPLANATION:

In a nuclear reactor, the water is heated due to the radiations coming from nuclear fission.

In the radioactive decay of uranium or other radio active substances, three types of radiations are produced which are known as alpha particle, beta particle and gamma ray.

Alpha particle is the double charged helium nucleus while beta is the stream of electrons. Hence, alpha and beta are the material particles. They are not radiations.

The gamma ray is an electromagnetic radiation. Hence, this will be responsible for heating water.

Hence, the correct answer is gamma radiations.

LuckyWell [14K]3 years ago

6 0

The answer would be D because is the strongest form of radiation

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A person stands on level ground with both feet equidistant from each other directly under their shoulders. In this case, the nor

d1i1m1o1n [39]

Answer:

The correct option is C: the normal force of gravity on each foot is equal to 1/2 the force of gravity on the person.

Explanation:

Since the feet are equidistant from each other, the total torque is zero:

$\Sigma \tau = 0$

And the total forces acting on the feet are also equal to zero:

$\Sigma F = 0$

Hence, the normal force on the feet are:

$W = N_{1} + N_{2}$

Where:

W: is the weight force

N₁: is the normal force of foot 1

N₂: is the normal force of foot 2

Since the normal force of each foot is the same, we have that N₁ = N₂ so:

$W = 2N$

$N = \frac{W}{2}$ (1)

From the result of equation (1), we have that the normal force on each foot is equal to 1/2 the force of gravity on the person.

Therefore, the correct option is C: the normal force on each foot is equal to 1/2 the force of gravity on the person.

I hope it helps you!

4 0

3 years ago

The geologic time scale originally ordered earth’s rocks by

Rasek [7]

The geologic time scale originally ordered Earth’s rocks by relative age.

<u>Explanation:</u>

Geologic time scale is the measure of events occurred in year wise from the starting of universe. Mostly dating of rocks and fossil fuels are doing the trends still now. In order to measure the age of rocks, geological time scale have preferred relative age mode.

In this system, the age of rocks are measured and compared layer by layer. So the lowest layer of rock will be having the maximum age. As we don’t know the starting time of universe, so this method of comparison between the layers to order the rocks is best. So, depending upon the position of the rocks, the age can be determined.

5 0

3 years ago

7. A car is travelling along a road at 30 ms when a pedestrian steps into the road 55 m ahead. The

trasher [3.6K]

Answer: Car collide with man

Explanation:

Given

Speed of car is $u=30\ m/s$

Distance of the man from the car is $s=55\ m$

Reaction time $t_r=0.5\ s$

Rate of deceleration $a_d=-10\ m/s^2$

Distance traveled in the reaction time $d_o=30\times 0.5=15\ m$

Net effective distance to cover $d=55-15=40\ m$

Distance required to stop the car

$\Rightarrow v^2-30^2=2(-10)(s)\\\Rightarrow 0-900=-20s\\\Rightarrow s=45\ m$

Require distance is more than that of net effective distance. Hence, car collides with the man.

6 0

3 years ago

BEST ANSWER GETS BRAINLIEST!

wel

Answer:

Distance = 16.9 m

Explanation:

We are given;

Power; P = 70 W

Intensity; I = 0.0195 W/m²

Now, for a spherical sound wave, the intensity in the radial direction is expressed as a function of distance r from the center of the sphere and is given by the expression;

I = Power/Unit area = P/(4πr²)

where;

P is the sound power

r is the distance.

Thus;

Making r the subject, we have;

r² = P/4πI

r = √(P/4πI)

r = √(70/(4π*0.0195))

r = √285.6627

r = 16.9 m

8 0

3 years ago

A segment is divided into two parts having lengths in the ratio of 5:3. If the difference between the length of the parts is 6",

Triss [41]

Answer:

15"

Explanation:

Let x be the length of the longer part, then the length of the shorter part is 3x/5, or also x - 6

therefore we have the following equation:

3x/5 = x - 6

We can multiply both sides by 5

3x = 5x - 6*5

2x = 30

x = 30/2 = 15"

So the length of the longer part is 15"

5 0

3 years ago